JP5978571B2 - Peeling apparatus and peeling method - Google Patents

Description

  The present invention relates to a peeling apparatus for partially peeling a laminate in which a plurality of layer bodies are laminated, and a peeling method thereof.

  7 and 8 are schematic cross-sectional views of the packaging material 210. FIG. A packaging material 210 that is a laminate is formed by sequentially laminating a base material layer 211, a metal foil layer 212, and a thermal adhesive resin layer 213.

  Such an interlayer adhesive strength of the packaging material 210 is evaluated by an adhesive strength obtained by a tensile test. Patent Document 1 and Patent Document 2 disclose a tensile strength measuring device for measuring tensile strength. When measuring the interlayer adhesive strength of the packaging material 210 with this apparatus, as shown in FIG. 8, a part of the metal foil layer 212 and the heat-adhesive resin layer 213 is peeled off as a pretreatment, and the tensile strength measuring apparatus holds it. It is necessary to secure the part in advance.

  Conventionally, this pretreatment is not performed mechanically but manually. Specifically, as shown in FIG. 9, a test piece of the packaging material 210 cut in a rectangular shape is prepared, and reaches the metal thin layer 212 from the base material layer 211 side in the width direction. Make a cut that does not penetrate (half cut). Next, the both ends of the test piece are clamped with fingers, and both ends are pulled while finely adjusting the direction and magnitude of the force applied to the packaging material 210 so that the thermal adhesive resin layer 213 is not broken (see arrows in FIG. 9). ). Thereby, the thermal adhesive resin layer 213 can be peeled from the metal foil layer 212 while the thermal adhesive resin layer 213 is stretched.

JP 2006-145394 A JP 2009-229280 A

  However, when the interlayer adhesive strength between the metal foil layer 212 and the heat-adhesive resin layer 213 of the packaging material 210 is high, it is difficult to manually peel the packaging material 210 partially.

  Further, if the packaging material 210 is peeled manually, the direction and magnitude of the force applied each time are not stable, and therefore, the peeling line at the boundary between the bonding surface and the peeling surface cannot be formed in a fixed shape. For this reason, the result of the interlayer adhesive strength measured by the tensile strength measuring device varies, and there is a problem that the accuracy of the measured value is lowered.

  In view of the above problems, an object of the present invention is to provide a peeling apparatus that can easily peel off a laminate and can stably form the shape of a peeling line into a fixed shape.

  In order to achieve the above object, the present invention has a first sandwiching portion and a second sandwiching portion that sandwich a laminate through an elastic body, and the first sandwiching portion is opposed to the second sandwiching portion in plan view. Slidable in the direction, and the sandwiching position of the first sandwiching part is shifted from the sandwiching position of the second sandwiching part in the sandwiching direction of the laminate, and the sliding direction of the first sandwiching part is sandwiching the laminate It is characterized by being substantially orthogonal to the direction.

  According to the present invention, in the peeling device configured as described above, the first holding portion can be freely positioned with respect to the second holding portion in the holding direction of the laminate.

  According to the present invention, in the peeling device having the above-described configuration, a control unit that controls power in the sliding direction of the first clamping unit is provided.

  Moreover, this invention is a peeling method of the laminated body which has a 1st layer body and a 2nd layer body at least, Comprising: The 1st process of cutting the said laminated body into a rectangular shape, and the transversal direction of the cut said laminated body A second step of half-cutting into the second layer body, and a third step of sandwiching the laminate at two locations of the first sandwiching portion and the second sandwiching portion across the cutting line, And a fourth step of pulling the stacked body by sliding the first sandwiching portion in a facing direction with respect to the two sandwiching portions, and the sandwiching position of the first sandwiching portion is the sandwiching position of the second sandwiching portion. On the other hand, it is located on the first layer body side and shifted in the sandwiching direction of the laminate, and the sliding direction of the first sandwiching portion is substantially perpendicular to the sandwiching direction of the laminate.

  Further, the present invention is characterized in that, in the peeling method configured as described above, the extending direction of the cutting line is substantially orthogonal to the sliding direction of the first holding part and the holding direction of the laminate.

  Moreover, the present invention is characterized in that, in the peeling method configured as described above, the first sandwiching section sandwiches the stacked body along the cutting line.

  Further, the present invention is characterized in that, in the peeling method configured as described above, in the fourth step, the load of the tensile force is maximized within a predetermined time from the initial movement of the first clamping portion, and then the load of the tensile force is reduced. .

  According to the first configuration of the present invention, the sandwiching position of the first sandwiching portion is shifted from the sandwiching position of the second sandwiching portion in the sandwiching direction. For this reason, if the 1st clamping part which slides in the opposing direction with a 2nd clamping part in planar view is slid substantially orthogonally with respect to the clamping direction of a laminated body, the force concerning a laminated body will go to a 2nd clamping part. And it is decomposed | disassembled into two directions of the direction which peels off a laminated body. Thereby, the force which tears off a laminated body only by sliding a 1st clamping part to one direction acts on a laminated body, and can peel a laminated body easily. Further, since the laminate is peeled by pulling in one direction, the peeling line is also easily formed in a certain shape. Moreover, the 1st clamping part and the 2nd clamping part are clamping the laminated body via the elastic body, and the direction of the force concerning a laminated body is finely adjusted by a deformation | transformation of an elastic body. Therefore, the laminate can be stably peeled while preventing the laminate from breaking during the peeling step.

  Further, according to the second configuration of the present invention, in the peeling device of the first configuration, the first sandwiching portion can be freely positioned in the sandwiching direction of the stacked body with respect to the second sandwiching portion. The height in the clamping direction can be adjusted according to the interlaminar adhesion strength, size, and material of the body. Thereby, the force concerning a laminated body can be set to the optimal direction for peeling of a laminated body.

  Further, according to the third configuration of the present invention, in the peeling device having the first configuration or the second configuration, the control unit that controls the power in the sliding direction of the first clamping unit is provided. If the force by which the portion pulls the laminate is controlled per unit time, the laminate can be stably peeled without breaking the laminate.

  Further, according to the fourth configuration of the present invention, when the laminate is half-cut in the short direction and a cutting line is made in the second layer body, peeling is performed with the cutting line as a starting point when the laminate is pulled. Be started. Before the start of pulling, the cutting line and the peeling line coincide with each other, and the peeling of the laminate continues while the peeling line separates from the cutting line immediately after the start of pulling. At this time, since the first clamping portion is slid in one direction to perform separation, the separation line can be stably formed in a certain shape.

  Further, according to the fifth configuration of the present invention, in the peeling method of the fourth configuration, the extending direction of the cutting line is substantially orthogonal to the sliding direction of the first clamping unit and the clamping direction of the laminate. Thus, the laminate is continuously peeled while the extending direction of the peeling line coincides with the extending direction of the cutting line. Thereby, a peeling line can be stably formed in a fixed shape.

  Further, according to the sixth configuration of the present invention, in the peeling method of the fourth configuration or the fifth configuration, the first clamping unit clamps the stacked body along the cutting line, immediately after the start of tensioning. The extending direction of the peeling line and the cutting line is easy to match. Thereby, a peeling line can be stably formed in a fixed shape.

  Further, according to the seventh configuration of the present invention, in the peeling methods of the fourth configuration to the sixth configuration, the first layer is subjected to the strongest load for the initial peeling of the second layer, and the delamination is performed. Start. Then, peeling of a laminated body can be continued, preventing the fracture | rupture of a 1st layer body by reducing the load of tensile force.

The perspective view of the peeling apparatus which concerns on embodiment of this invention The side view of the peeling apparatus which concerns on embodiment of this invention Schematic which shows typically the force which concerns on the laminated body in the peeling apparatus which concerns on embodiment of this invention. The top view of the laminated body used for the peeling apparatus which concerns on embodiment of this invention. Sectional drawing of the laminated body used for the peeling apparatus which concerns on embodiment of this invention. The side view which expands and shows the state by which the laminated body was clamped in the peeling apparatus which concerns on embodiment of this invention. Schematic cross-sectional view of a general laminate packaging material Schematic cross-sectional view of a packaging material that is a general laminate that has been pretreated Schematic diagram schematically showing a conventional laminate peeling method

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. FIG. 1 is a perspective view of a peeling apparatus 1 according to an embodiment of the present invention, and FIG. 2 is a side view of the peeling apparatus 1. For the sake of explanation, the sliding direction of the first sandwiching portion 5 (the left-right direction in FIG. 2) is the X direction, the sandwiching direction of the stacked body 10 (the vertical direction in FIG. 2) is the Z direction, and the cutting line 10a The extending direction (the front-rear direction in FIG. 2) is the Y direction. The X direction, the Y direction, and the Z direction are orthogonal to each other.

  The peeling apparatus 1 includes a first clamping unit 4 and a second clamping unit 5, a tension unit 3, a pedestal 2, and a control unit (not shown), and the laminate 10 to be peeled is the first clamping unit 4. And it is clamped by two places of the 2nd clamping part 5. FIG. The second clamping part 5 is fixed to the base 2 by a fixing part (not shown) and is not movable. On the other hand, the 1st clamping part 4 is connected and fixed to the tension | pulling part 3 on the base 2, and slides on the base 2 in the X direction. When the laminate 10 is sandwiched between the second sandwiching portion 5 and the first sandwiching portion 4 and the first sandwiching portion 4 is moved in the X direction, the laminate 10 is pulled in the X direction. The control unit can control the tensile force of the tensile unit 3 every unit time.

  The first clamping position 4e of the first clamping part 4 is located with a shift in the Z direction with respect to the second clamping position 5e of the second clamping part 5. However, in the XY plan view, the first clamping unit 4 faces the second clamping unit and is slidable in the facing direction (X direction). Moreover, the 1st clamping part 4 is provided with the movable mechanism (not shown) which can be freely moved to a Z direction. Thereby, the 1st holding part 4 can be freely positioned in a Z direction.

  The first clamping part 4 opens between the first crimping parts 4c and 4d by raising the first lever 4a, and closes between the first crimping parts 4c and 4d by pulling the first lever 4a. At this time, the laminated body 10 is sandwiched and held between the first crimping parts 4c and 4d. The first clamping position 4e means the position of the clamping surface between the first crimping parts 4c and 4d when the first crimping parts 4c and 4d are closed.

  The first crimping parts 4c and 4d are made of an elastic body having a predetermined thickness. An example of the elastic body is a synthetic resin. Specifically, it is preferable that the material has a certain elastic force such as Teflon (registered trademark) rubber, nitrile rubber and the like and is hard to slip. By sandwiching the laminate 10 from both sides by the elastic body, the direction of the force applied to the laminate 10 when the laminate 10 is pulled is finely adjusted by deformation of the elastic body. Thereby, it is possible to prevent the laminated body 10 from being broken by the elastic body absorbing an excessive force leading to the breaking of the laminated body 10. Further, by using a non-slip material, it is possible to prevent the laminated body 10 from coming off from the first sandwiching portion 4 when the laminated body 10 is pulled.

  Moreover, when the thickness of the 1st crimping | compression-bonding parts 4c and 4d is too large, when pulling the laminated body 10 in the horizontal direction, the 1st crimping | compression-bonding parts 4c and 4d will deform | transform greatly and the laminated body 10 cannot be hold | maintained stably. Alternatively, the laminate 10 may be placed on the pressure-bonding surface of the first pressure-bonding portion 4d and the adhesive sheet may be attached from above. Thereby, the laminated body 10 is affixed on the upper surface of the crimping | compression-bonding part 4d, and the laminated body 10 can be hold | maintained stably.

  The 2nd clamping part 5 is fixed to the base 2 in the state which hold | maintained the laminated body 10. As shown in FIG. The holding means of the laminated body 10 is the same as that of the first clamping part 5, and the second clamping part 5 includes a second lever 5a and second crimping parts 5c, 5d. Accordingly, the stacked body 10 is sandwiched and held by the same mechanism as that of the first sandwiching section 4.

  The tension part 3 can slide the first clamping part 4 in the X direction. The tension part 3 may be hydraulic, electric, or manual. Moreover, the tension | tensile_strength of the tension | pulling part 3 can be controlled for every unit time by a control part. Thereby, the load of the tensile force can be increased most within a predetermined time from the initial movement of the first clamping unit 4, and the load of the tensile force can be reduced thereafter.

  FIG. 3 shows the force applied to the laminate 10. As shown in FIG. 3, when the laminate 10 is pulled with a force F in the X direction, the reaction occurs in the direction opposite to the X direction with the separation point P on the separation line 10 b at the boundary between the bonding surface and the separation surface as the action point. Receives force F '. The reaction force F 'is decomposed in the M1 direction and the M2 direction starting from the separation point P. The M1 direction is a direction toward the fixed second clamping unit 5. The M2 direction is a direction orthogonal to the M1 direction, and is a direction in which the layered body to be joined is peeled off.

  In the XZ plane, when the peeling point P is deviated by θ degrees from the clamping position 5e of the second clamping unit 5, the force applied in the M1 direction is F′cos θ, and the force applied in the M2 direction is the force of F′sin θ. Become.

  In addition, the shift | offset | difference of the peeling point P in a XZ plane can be adjusted by moving the 1st clamping part 4 up and down to a Z direction. Thereby, the optimal angle θ can be set according to the interlayer adhesive strength and material of the laminate 10.

  Next, the peeling method of the laminated body 10 using the peeling apparatus 1 is demonstrated. In the first step, the laminate 10 cut into a rectangular shape is produced. For example, the laminated body 10 includes a thermal adhesive resin layer 13 that is a first layer body, a metal foil layer 12 that is a second layer body, and a base material layer 11 that are sequentially laminated. The resin layer 13 can be partially peeled from the metal foil layer 12.

  FIG. 4 is a top view of the laminate 10 used in the peeling apparatus 1, and FIG. 5 is a cross-sectional view of the laminate 10 used in the peeling apparatus 1. In the second step, the cut line 10a is formed by making a cut (half cut) that reaches the thin metal layer 12 from the substrate layer 11 side in the Y direction in the Y direction but does not penetrate the thin metal layer 12. Thereby, a part of the base material layer 11 and the metal foil layer 12 is cut, leaving a part of the heat-adhesive resin layer 13 and the metal thin layer 12.

  FIG. 6 is a side view of the peeling apparatus 1 showing an enlarged view of the state in which the laminate 10 is sandwiched. In the third step, one end of the laminate 10 is sandwiched by the first sandwiching section 4 and the other end is sandwiched by the second sandwiching section 5 along the cutting line 10 a. The cutting line 10 a is located between the first clamping part 4 and the second clamping part 5. Further, the first clamping position 4e is located on the thermal adhesive resin layer 13 side with respect to the second clamping position 5e and shifted in the Z direction.

  In the fourth step, the first clamping unit 4 is pulled in the X direction with the second clamping unit 5 fixed. At this time, the tension | pulling part 3 is divided into a 1st period and a 2nd period, and pulls the 1st clamping part 4 in two steps. The first period refers to a period within a predetermined time from the start of pulling. The second period refers to a period within a predetermined time after the end of the first period. In the first period, the load of the maximum tensile force is provided in the tension process. This is because the laminated body to be joined requires the largest load at the time of peeling. In the second period, the first clamping unit 4 is pulled with a lower load than in the first period. Thereby, it is possible to prevent the thermal adhesive resin layer 13 from being broken. After elapse of the second period, the tension part 3 finishes the tension before the laminate 10 is broken.

  According to this embodiment, it has the 1st clamping part 4 and the 2nd clamping part 5 which clamp the laminated body 10 via an elastic body, and the 1st clamping part 4 is XY plane with respect to the 2nd clamping part 5. FIG. It is provided so as to be slidable in the opposite direction when viewed, and the sandwiching position 4e of the first sandwiching part 4 is shifted from the sandwiching position 5e of the second sandwiching part 5 in the sandwiching direction (Z direction) of the laminate 10 and The sliding direction (X direction) of the 1 clamping part 4 is substantially orthogonal to the clamping direction (Z direction) of the laminated body 10. For this reason, when the first holding part 4 is slid in the X direction, the force F ′ applied to the laminated body 10 is directed to the second holding part with the point on the peeling line 10b of the laminated body 10 as the action point (M1 direction). And it is decomposed | disassembled into two directions of the direction (M2 direction) which peels off the laminated body 10. FIG. Thereby, the laminated body 10 can be partially peeled easily only by sliding the 1st clamping part 4 to a X direction. Moreover, since the laminated body 10 is peeled by pulling in one direction (X direction), the peeling line 10b can be stably formed in a certain shape. Further, the first sandwiching portion 4 and the second sandwiching portion 5 sandwich the laminated body 10 via the elastic bodies 4c, 4d, 5c, and 5d, and the direction of the force applied to the laminated body 10 is slightly changed by the deformation of the elastic body. Adjusted. Therefore, the laminate 10 can be stably peeled while preventing the laminate 10 from being broken during the peeling step.

  Further, the first sandwiching part 4 can be freely positioned with respect to the second sandwiching part 5 in the sandwiching direction (Z direction) of the laminate 10. For this reason, the height F in the laminated body 10 is adjusted in the optimum direction for peeling the laminated body 10 by adjusting the height in the clamping direction (Z direction) according to the interlayer adhesive strength, size, and material of the laminated body 10. Can be set.

  In addition, by providing a control unit that controls the power in the sliding direction (X direction) of the first clamping unit 4, by pulling the laminate 10 while adjusting the tensile force, the laminate 10 is stable without breaking. The laminate 10 can be peeled off.

  Moreover, when the laminated body 10 is pulled by putting a cutting line 10a in a second layer body (metal foil layer 12) that is half-cut in the short-side direction and peeled off, peeling is performed with the cutting line 10a as a base point. Is started. At this time, the cutting line 10a and the peeling line 10b coincide before the start of pulling, and the peeling of the laminate 10 continues while the peeling line 10b is separated from the cutting line 10a immediately after the start of pulling. Therefore, by pulling the laminate 10 in one direction (X direction), the peeling can be continued while the extending direction of the peeling line 10b is held in a certain direction. For this reason, the peeling line 10b can be formed in a fixed shape. Therefore, it can suppress that the shape of a peeling surface varies for every laminated body 10. FIG.

  Further, peeling is performed by forming the extending direction (Z direction) of the cutting line 10a so as to be substantially orthogonal to the sliding direction (X direction) of the first sandwiching portion 4 and the sandwiching direction (Z direction) of the laminate 10 respectively. The peeling can be continued while the extending direction of the line 10b is made to coincide with the extending direction (Z direction) of the cutting line 10a. Thereby, the peeling line 10b can be stably formed in a fixed shape.

  Moreover, when the 1st clamping part 4 clamps the laminated body 10 along the cutting line 10a, the extending direction of the peeling line 10b and the cutting line 10a is easy to correspond in initial stage peeling. Thereby, a peeling line can be stably formed in a fixed shape.

  Further, by increasing the load of the tensile force most within a predetermined time from the initial movement of the first sandwiching portion 4, the first layer body (thermoadhesive resin layer 13) is removed from the second layer body (metal foil layer 12). Delamination can be started by applying the strongest load to the initial peeling. Then, peeling of the laminated body 10 can be continued, preventing the fracture | rupture of a 1st layer body (thermoadhesive resin layer 13) by reducing the load of tensile force.

  Note that the packaging material used in the description of the present embodiment is an example, and other layers are included as long as the packaging material is a laminated body in which at least the first layer body and the second layer body are laminated. It may be. In this case, the first layer body and the second layer body can be partially separated by adjusting the depth of the half-cut cut.

  INDUSTRIAL APPLICABILITY The present invention can be used for a peeling apparatus that produces a test piece for measuring the interlayer adhesive strength of a laminate.

DESCRIPTION OF SYMBOLS 1 Peeling device 2 Base 3 Pulling part 4 1st clamping part 4a 1st lever 4c, 4d 1st crimping part 4e 1st clamping position 5 2nd clamping part 5a 2nd lever 5c, 5d 2nd crimping part 5e 2nd clamping position DESCRIPTION OF SYMBOLS 10 Laminated body 10a Cutting line 10b Peeling line 11 Base material layer 12 Metal foil layer 13 Thermal adhesive resin layer P Peeling point

Claims (7)

A first sandwiching portion having a first sandwiching portion and a second sandwiching portion for sandwiching the laminated body via an elastic body, the first sandwiching portion being slidable in an opposing direction in plan view with respect to the second sandwiching portion; Is sandwiched in the sandwiching direction of the laminate with respect to the sandwiching position of the second sandwiching portion, and the sliding direction of the first sandwiching portion is orthogonal to the sandwiching direction of the laminate , and the first sandwiching portion and the first sandwiching portion The peeling apparatus characterized by hold | maintaining the said laminated body only by 2 clamping parts .   The peeling apparatus according to claim 1, wherein the first clamping unit can be freely positioned in the clamping direction of the stacked body with respect to the second clamping unit.   The peeling apparatus according to claim 1, further comprising a control unit that controls power in a sliding direction of the first clamping unit. A method for peeling a laminate having at least a first layer body and a second layer body,
A first step of cutting the laminated body into a rectangular shape, a second step of half-cutting the cut laminated body in a short direction and placing a cutting line in the second layer body, and a first across the cutting line A third step of sandwiching the stacked body at two locations of the sandwiching portion and the second sandwiching portion; and a fourth step of pulling the stacked body by sliding the first sandwiching portion in an opposing direction with respect to the second sandwiching portion in a plan view. And the first clamping part is located on the first layer body side with respect to the clamping position of the second clamping part and is shifted in the clamping direction of the laminate, and the slide of the first clamping part A peeling method characterized in that the direction is perpendicular to the sandwiching direction of the laminate. The peeling method according to claim 4, wherein the extending direction of the cutting line is orthogonal to the sliding direction of the first clamping part and the clamping direction of the laminate.   The peeling method according to claim 4 or 5, wherein the first clamping part clamps the laminated body along the cutting line.   The fourth step is characterized in that, in the fourth step, the load of the tensile force is maximized within a predetermined time from the initial movement of the first clamping portion, and then the load of the tensile force is reduced. Peeling method.

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